'''
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License") you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http:#www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
'''


#import org.apache.jena.graph.Graph;
#import org.apache.jena.graph.Node;
#import org.apache.jena.graph.Triple;

'''
 * ModelGraphInterface - this interface mediates between the API Model level
 * and the SPI Graph level. It may change if the SPI changes, is more fluid than
 * Model and ModelCon, so don't use if it you don't *need* to.
'''
from abc import ABC, abstractmethod

class ModelGraphInterface (ABC):
    '''
     * Answer a Statement in this Model who's SPO is that of the triple <code>t</code>.
    '''
    # param Triple t
    # result Statement
    @abstractmethod
    def asStatement(self, t):
        pass

    '''
     * Answer the Graph which this Model is presenting.
    '''
    # param 
    # result Graph
    @abstractmethod
    def getGraph(self):
        pass

    '''
     * Answer an RDF node wrapping <code>n</code> suitably URI nodes
     * become Resources with the same URI, blank nodes become Resources
     * with URI null but the same AnonId, and literal nodes become Literals
     * with <code>n</code> as their value carrier.
    '''
    # param Node n
    # result RDFNode
    @abstractmethod
    def asRDFNode(self, n):
        pass

    # param Node n
    # result Resource
    @abstractmethod
    def wrapAsResource(self, n):
        pass

